Deuteronomy 25:5

Overview - Deuteronomy 25
Stripes must not exceed forty.
The ox is not to be muzzled.
Of raising seed unto a brother.
11 Of the immodest woman.
13 Of unjust weights and measures.
17 The memory of Amalek is to be blotted out.
Treasury of Scripture Knowledge

Deuteronomy 25:5  (King James Version)
If brethren dwell together, and one of them die, and have no child, the wife of the dead shall not marry without unto a stranger: her husband's brother shall go in unto her, and take her to him to wife, and perform the duty of an husband's brother unto her.

Matthew 22:24 ; Mark 12:19 ; Luke 20:28

husband's brother
or, next kinsman.
Genesis 38:8 Genesis 38:9 ; Ruth 1:12 Ruth 1:13 ; 3:9 4:5